Mechanical aerating device,申请号US19440520813-传众专利搜索

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发明名称	Mechanical aerating device
摘要
申请公布号	US2421191(A)	申请公布日期	1947.05.27
申请号	US19440520813	申请日期	1944.02.02
申请人		发明人
分类号	B01F3/04;B01F7/00;B01F7/16;C02F3/16	主分类号	B01F3/04
代理机构		代理人
主权项
地址

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